
10
Data Device Corporation
www.ddc-web.com
BU-61703/61705
D1 web-09/02-0
FIGURE 3. RT RECEIVE COMMAND (BURST MODE) TIMING
1553 BUS
RX COMMAND
DATA #2
DATA #1
STATUS
L-BRO, T/R, SA4-SA0
WC/MC/CWC
INCMD
DTREQ
DTGRT
DTACK
GBR
MEMWR
MEMOE
D15-D0
RT_FAIL
MSG_ERR
HS_FAIL
MID-PARITY
MID-SYNC
BURST
DATA
WRITE
TRANSFER
t1
t11
t12
t6
t2
t15
t9
PREVIOUS MSG
cwc
ILLEGAL, SRV_RQST
SSFLAG, BUSY
VALID
t3
t5
t4
t8
WC / MC
CWC = 0
CWC = 1
RT RECEIVE COMMAND (BURST MODE)
1F
t7
t14
t13
t10
NOTE 1
: If the RX message is a Broadcast message then the rising edge of INCMD
is referenced from the rising edge of GBR.
(Refer to FIGURE 9)